O-ring installation device



FIG. 1 is a perspective view of an o-ring installation device, showing the new design'

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dashed broken lines depict portions of the device which form no part of the claimed design. 

CLAIM The ornamental design for an o-ring installation device, as shown. 